Zoom Meeting Chat Box font size on Linux

Hi.
I'm hosting meetings on Linux Mint 21 XFCE using the Version 5.14.0 (1720) Zoom app.
I have read the posts about being able to change the font size in the chat box with the CTL + keyboard short cut.  I also don't have the controls people report in the accessibility settings.  So neither of these options work for me.

I'm struggling to read the small text on my monitor, is there something I am doing wrong?